Where and What do you have to add in regedit to get the font sizes 5,6,and 7 ?

There is no way get font sizes 5, 6, or 7. The only sizes available are 8, 10, 12, 14, 16, and 18 - assuming you've used Daniel's Pronto.ini Workshop (in the files area) to enable them. Understand that although the Workshop enables some additional font sizes, symbols are NOT available for the extra sizes except on the Pronto Pro/Marantz 9200 and MAYBE the Marantz 5200 (not sure about the 5200).

Jim L